Gasket.



110.834.611. 4, PATBNTED 00130, 1906.

o. J. GARLOGK.

GASKET.

APPLICATION FILED MAY 24. 100s.

UNITED STATES IP'Arnivr OFFICE.

Specification of Letters Patent.

Patented Oct. 80, 1906.

. Application led May 24, 1906. Serial No. 318,522.

4To all whom it ,ma/y concern.-

Be it known that I, OLIN J. GARLoox, ofl

Palmyra, in the county of Wayne and State of New York, have invented a new and useful Improvement in Gaskets, which improvement is fully set forth in the following specification Y and shown in the l accompanying drawings.

My present invention relates to machinerypacking generally, it being designed more particularly for packing large openings, such as manholes of steam-boilers and-similar openmgs. v

The invention is an improved rope of packing material and gaskets formed therefrom, the rope being made up of strands or membersof india-rubber, fiber, and flexible metal, with the latter free to move endwise within thewrapper, the inventionl also consisting in part in the manner of forming and securing the joint at the abutting ends of the section of the rope whenbent to forma ring of packing or gasket.

The objects and advantages of the invention will be brought out and made to appear in the following description, reference being had to thel accompanying drawings, which, with the reference-numerals marked thereon, form a part of this specification.

Referring to the drawings, Figure l shows in plan a manhole plate orcastmg with my improved gasket in place thereon, parts being broken away and other parts axially sectioned. Fig. 2 shows a portion of the rope with parts broken away and longitudinally sectioned through the axis of the rope. Fig. 3 is a transverse section of the rope, taken as on the dotted line in Fig; 4. Fig. 4 shows portions. at the joined ends of the rope, as in forming a gasket, with parts broken away and centrally longitudinally sectioned, showing a connecting member or connector for the ends ofthe rope. Fig. 5 is a transverse sec tion at one side of the manhole-casting, taken lon the dotted line in Fig. 1, showing the gasket in cross-section.

Referring to the parts shown, l is a manhole plate or casting of ordinary form and struction or 'such as is commonly employed with steam-boilers, 2 being my improved packing-gasket in place thereon. This gaset is made from a section or piece of rope 3,

- of packing material, of ythe proper length by bending the same to the form of the manhole required to be packed.y The manhole-plates are commonly of a circular or an oval form,

The rope 3 of the packing material from- Which the gaskets are formed consists of an outer tube or inclosing case 5, preferably of india-rubber, holding immediately within it a fibrous tubular wrap per 6, of braided asbestos or cotton cloth, or it may be flax, hemp, or other fiber, the particular material of which the wrapper is made not being essential to the invention. Within the wrapper 6 is placed a leaden tube 7, the connection or contact between which tube and the wrapper being such that the tube is free to turn or to move freely longitudinally or endwise within the wrapper, this being an essential feature of the invention.

While giving weight and body to the gasket and a certain amount of stiffness and stability, the leaden` tube 7 serves also to hold the asket to or in the exact curved form 1t`when fitted to the manhole.

In Fig. 4 is shown the two ends of a section vof the rope squarely abutted together and In this form joined as in forming a gasket. a short core-piece 8, commonly of lead, is employed within the body-tube 7, as shown, crossing the joint 10 between the ends of the rope and extending equally each way from said joint. The core-piece 8 is preferably tubular, as appears, and having a diameter such as to fill the body-tube 7 to hold the adjacent ends of the rope even and coaxial; but it is to be understood that I only in some cases use this core-piece or connector 8 in forming the joints for gaskets, the joint usually preferred and most commonly employed being shown in Fig. l. In forming this joint the core-piece 8 is dispensed with, and instead the leaden body-tube 7 is slipped longitudinally through the outer portions of the rope, so as to project at one end ofthe rope-section, leaving al corresponding cavity at the opposite end. This shifting of the body-tube within the wrapper is easily effected on account of the said tube being left free to move within the wrapper when the rope is constructed as above stated', the tube being shifted after a section is cut from the rope and while straight or before it is bent to form the gasket.

In bringing the ends of the section of rope together to form the gasket the projecting end of the tube 7 is primarily inserted in the cavity within the wrapper 6 at the opposite given j IOO IIO

end, and when the ends of the section meet to form the joint 4 the ends ofthe tube 7 will likewise abut and form a joint at 9 distant from the joint 4 and not coinciding therewith. This makes a perfect and permanent joint for the gasket, and it is easily and conveniently made and without the use of any eXtra piece separate from the section of rope itself.

The india-rubber inclosing case 5 and the inclosed ibrous wrapper 6 are usually cemented together or otherwise joined so as to have no relative motion with each other. Each being both yield ing and resilient causes the gasket to make a tight joint at the manhole when pressed by the upper plate or cap (not shown) well known and of common use with manholes, the plate l being fori/ned with a concave seat or channel 11, Fig. 5, Jfor receiving the gasket.

What l claim as my invention, and desire to secure by Letters Patent, is-' 1. In packings for machinery a gasket for manholes, consisting of a rope body formed with an outer yielding casing, as of indiarubber, and a iibro us wrapper within the casing, and a flexible metallic tube, as of lead, within the wrapper, said casing and the wrapper being secured together and the tube being free to move endwise within the wrapper.

2. A rope of packing consisting of a iieXible outer casing', a flexible wrapper within the casing, and a flexible tube within the wrapper, the easing and the wrapper being rigidly connected and the tube being free to move endwise within the wrapper.

3. A gasket for manholes, the same being a section of rope bent to form and having an outer yielding tubular casing, and a tubular brous wrapper within the casing, and a leaden tube within the wrapper, the casing and the Wrapper being relatively immovable and the lead tube being adapted to be moved longitudinally within the outer body and to project at its end.

4. A gasket-packing for openings such as manholes, consisting of a section of rope of packing cylindrical in cross-section having a tubular casing of india-rubber and within it a braided tubular wrapper connected immovably witn the said casing, and a leaden. tube within the wrapper and free to move endwise therein, the rope-section being bent to form the gasket with its opposite ends abutting, and means for securing said ends together.

5. A packing-gasket consisting of a rope body having a iiexible outer easing, and a wrapper within the casing of material differ ent from that of the casing, aleaden tube free to move endwise within said wrapper, and a iiexible tube within the wrapper, the whole being bent to bring the ends ofthe rope body together, the joint between the ends of the said tube being out of coincidence with the joint ybetween the ends of the outer casing and the OLIN J. GARLOCK. Witnesses S. DQVAN ALsTINE, A. M. WHITMORE. 

